internal static byte[] GetHashFinalBlock(byte[] input, int ibStart, int cbSize, ABCDStruct ABCD, long len)
{
byte[] array = new byte[64];
byte[] bytes = BitConverter.GetBytes(len);
Array.Copy(input, ibStart, array, 0, cbSize);
array[cbSize] = 128;
if (cbSize <= 56)
{
Array.Copy(bytes, 0, array, 56, 8);
MD5Util.GetHashBlock(array, ref ABCD, 0);
}
else
{
MD5Util.GetHashBlock(array, ref ABCD, 0);
array = new byte[64];
Array.Copy(bytes, 0, array, 56, 8);
MD5Util.GetHashBlock(array, ref ABCD, 0);
}
byte[] array2 = new byte[16];
Array.Copy(BitConverter.GetBytes(ABCD.A), 0, array2, 0, 4);
Array.Copy(BitConverter.GetBytes(ABCD.B), 0, array2, 4, 4);
Array.Copy(BitConverter.GetBytes(ABCD.C), 0, array2, 8, 4);
Array.Copy(BitConverter.GetBytes(ABCD.D), 0, array2, 12, 4);
return(array2);
}
private static byte[] GetHash(byte[] input)
{
if (input == null)
{
throw new ArgumentNullException("input", "Unable to calculate hash over null input data");
}
ABCDStruct aBCD = default(ABCDStruct);
aBCD.A = 1732584193u;
aBCD.B = 4023233417u;
aBCD.C = 2562383102u;
aBCD.D = 271733878u;
int i;
for (i = 0; i <= input.Length - 64; i += 64)
{
MD5Util.GetHashBlock(input, ref aBCD, i);
}
return(MD5Util.GetHashFinalBlock(input, i, input.Length - i, aBCD, (long)input.Length * 8L));
}